A013826 -id:A013826 - cp's OEIS frontend

A013827 a(n) = 3^(5*n + 2).

9, 2187, 531441, 129140163, 31381059609, 7625597484987, 1853020188851841, 450283905890997363, 109418989131512359209, 26588814358957503287787, 6461081889226673298932241, 1570042899082081611640534563

Offset: 0

N. J. A. Sloane

Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (243).

Cf. A000244 (3^n), A016873 (5*n+2).

[3^(5*n+2): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011

3^(5*Range[0,20]+2) (* or *) NestList[243#&,9,20] (* Harvey P. Dale, Feb 05 2020 *)

a(n)=3^(5*n+2) \\ Charles R Greathouse IV, Jul 11 2016

From Philippe Deléham, Nov 26 2008: (Start)
a(n) = 243*a(n-1), n > 0; a(0)=9.
G.f.: 9/(1-243*x).
a(n) = 3*A013826(n). (End)

A013828 a(n) = 3^(5*n + 3).

Original entry on oeis.org

27, 6561, 1594323, 387420489, 94143178827, 22876792454961, 5559060566555523, 1350851717672992089, 328256967394537077627, 79766443076872509863361, 19383245667680019896796723, 4710128697246244834921603689

Offset: 0

N. J. A. Sloane

Vincenzo Librandi, Table of n, a(n) for n = 0..200
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (243).

Cf. A000244 (3^n), A016885 (5*n+3).

[3^(5*n+3): n in [0..15]]; // Vincenzo Librandi, Jul 07 2011

3^(5*Range[0,20]+3) (* or *) NestList[243#&,27,20] (* Harvey P. Dale, Jun 07 2016 *)

From Philippe Deléham, Nov 30 2008: (Start)
a(n) = 243*a(n-1), n > 0; a(0)=27.
G.f.: 27/(1-243*x).
a(n) = 3*A013827(n) = 9*A013826(n) = A013829(n)/3. (End)

cp's OEIS Frontend

A013827 a(n) = 3^(5*n + 2).

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